paint-ui/store/tool-store.ts

import { create } from 'zustand';
import { persist } from 'zustand/middleware';
import type { ToolType, ToolSettings, ToolState } from '@/types';

interface ToolStore extends ToolState {
  /** Set active tool */
  setActiveTool: (tool: ToolType) => void;
  /** Update tool settings */
  updateSettings: (settings: Partial<ToolSettings>) => void;
  /** Set brush size */
  setSize: (size: number) => void;
  /** Set opacity */
  setOpacity: (opacity: number) => void;
  /** Set hardness */
  setHardness: (hardness: number) => void;
  /** Set color */
  setColor: (color: string) => void;
  /** Set flow */
  setFlow: (flow: number) => void;
  /** Set spacing */
  setSpacing: (spacing: number) => void;
  /** Reset settings to defaults */
  resetSettings: () => void;
}

const DEFAULT_SETTINGS: ToolSettings = {
  size: 10,
  opacity: 1,
  hardness: 1,
  color: '#000000',
  flow: 1,
  spacing: 0.25,
};

export const useToolStore = create<ToolStore>()(
  persist(
    (set) => ({
      activeTool: 'brush',
      settings: { ...DEFAULT_SETTINGS },
      cursor: 'crosshair',

      setActiveTool: (tool) => {
        const cursors: Record<ToolType, string> = {
          select: 'crosshair',
          move: 'move',
          pencil: 'crosshair',
          brush: 'crosshair',
          eraser: 'crosshair',
          fill: 'crosshair',
          eyedropper: 'crosshair',
          text: 'text',
          shape: 'crosshair',
          crop: 'crosshair',
          clone: 'crosshair',
          blur: 'crosshair',
          sharpen: 'crosshair',
        };

        set({
          activeTool: tool,
          cursor: cursors[tool],
        });
      },

      updateSettings: (settings) => {
        set((state) => ({
          settings: { ...state.settings, ...settings },
        }));
      },

      setSize: (size) => {
        set((state) => ({
          settings: { ...state.settings, size: Math.max(1, Math.min(1000, size)) },
        }));
      },

      setOpacity: (opacity) => {
        set((state) => ({
          settings: { ...state.settings, opacity: Math.max(0, Math.min(1, opacity)) },
        }));
      },

      setHardness: (hardness) => {
        set((state) => ({
          settings: { ...state.settings, hardness: Math.max(0, Math.min(1, hardness)) },
        }));
      },

      setColor: (color) => {
        set((state) => ({
          settings: { ...state.settings, color },
        }));
      },

      setFlow: (flow) => {
        set((state) => ({
          settings: { ...state.settings, flow: Math.max(0, Math.min(1, flow)) },
        }));
      },

      setSpacing: (spacing) => {
        set((state) => ({
          settings: { ...state.settings, spacing: Math.max(0.01, Math.min(10, spacing)) },
        }));
      },

      resetSettings: () => {
        set({ settings: { ...DEFAULT_SETTINGS } });
      },
    }),
    {
      name: 'tool-storage',
      partialize: (state) => ({
        activeTool: state.activeTool,
        settings: state.settings,
        // Exclude cursor - it's derived from activeTool
      }),
    }
  )
);